Question
Find the wrong number in the given number series.
3, 6, 10, 15, 21, 29Solution
ATQ,
3 + 3 = 6
6 + 4 = 10
10 + 5 = 15
15 + 6 = 21
21 + 7 = 28
But here it's 29, which is wrong.
So, 28 should be in place of 29.
What is the simplified value of the given expression?
4(sin² 20° + sin² 70°) + 2sin 30° - (2sec 60° + cot 45°)
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tan 20Ëš x tan 23Ëš x tan 67Ëš x tan 70Ëš = ?
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